JP7525367B2 - Indirect lighting fixtures - Google Patents

Description

The present invention relates to indirect lighting fixtures, such as cove lighting fixtures and cornice lighting fixtures, that are installed on the ceiling of a building that has a high ceiling section and a low ceiling section that is located lower than the high ceiling section.

In recent years, not only in hotels, art museums, commercial facilities, and other buildings, but also in ordinary detached houses, raised or lowered ceilings (hereafter collectively referred to as raised ceilings) that are composed of a high ceiling section that is higher than the floor level and a low ceiling section are being adopted, and indirect lighting known as cove lighting or cornice lighting is used in the ceilings of these buildings.

Cove lighting is a type of indirect lighting that shines the light from a light source (lamp) toward a high ceiling (see, for example, Patent Document 1), and cornice lighting is a type of indirect lighting that shines the light from a light source (lamp) toward a wall (see, for example, Patent Document 2).

Japanese Utility Model Application Publication No. 7-18309 Utility Model Publication No. 63-123005

However, the indirect lighting fixtures disclosed in the above-mentioned Patent Documents 1 and 2 are constructed as a single unit so that the vertical spacing cannot be adjusted. Therefore, if the height between the high ceiling and low ceiling is changed, it cannot be accommodated, and it is necessary to prepare a different indirect lighting fixture with a different vertical spacing, which creates the problem that it is not easy to meet the needs of the site.

The present invention was made to solve these problems, and aims to provide an indirect lighting fixture that can easily and quickly meet on-site needs, improve workability, and reduce costs, without the need to prepare a separate indirect lighting fixture even when the height of the high ceiling and low ceiling sections that make up the building's ceiling are changed.

In order to solve the above-mentioned problems, the indirect lighting fixture of the present invention is an indirect lighting fixture to be installed on a ceiling of a building having a high ceiling section and a low ceiling section located at a lower position than the high ceiling section, and comprises: a high ceiling mounting member which is attached to the high ceiling section and has a hanging connecting surface section which descends toward the low ceiling section; and a low ceiling mounting member which is attached to the low ceiling section and has a lamp installation surface section on which a lamp is installed, and an upright connecting surface section which rises toward the high ceiling section and whose upper end section extends until it is higher than the lower end section of the hanging connecting surface section of the high ceiling mounting member, and which overlaps with the hanging connecting surface section of the high ceiling mounting member; and at least one of the overlapping portions of the hanging connecting surface section of the high ceiling mounting member and the upright connecting surface section of the low ceiling mounting member has a loose hole which is long in the vertical direction, and which is configured so that the high ceiling mounting member and the low ceiling mounting member can be fixed by changing the vertical distance between them by using the loose hole.
In addition, in the indirect lighting fixture of the present invention, the high ceiling mounting member includes a front-attached high ceiling mounting member that is fixed to the high ceiling portion by a fixing member and has a hooked portion on its underside, and a rear-attached high ceiling mounting member that is provided with a hooking portion that hooks onto the hooked portion and has the hanging connecting surface portion, and the hooked portions of the front-attached high ceiling mounting member are provided in multiple locations on the underside of the front-attached high ceiling mounting member at a predetermined interval, while the hooking portions of the rear-attached high ceiling mounting member are provided on the upper side of the rear-attached high ceiling mounting member at the same predetermined interval from the hooked portions of the front-attached high ceiling mounting member, and are configured to be hooked onto the hooked portions of the front-attached high ceiling mounting member.
Furthermore, in the indirect lighting fixture of the present invention, when the hanging portion of the rear-mounted high ceiling mounting member is hooked onto the hooked portion of the front-mounted high ceiling mounting member, the tip of the front-mounted high ceiling mounting member protrudes toward the wall surface inside the room more than the tip of the rear-mounted high ceiling mounting member, and when the tip of the front-mounted high ceiling mounting member is attached to the high ceiling part so that it abuts or is close to the wall surface inside the room, a gap is left between the tip of the rear-mounted high ceiling mounting member and the wall surface inside the room.

The indirect lighting fixture of the present invention comprises a high ceiling mounting member which is attached to a high ceiling portion and has a hanging connecting surface portion which descends toward a low ceiling portion, and a low ceiling mounting member which is attached to the low ceiling portion and has a lamp mounting surface portion on which a lamp is installed, and an upright connecting surface portion which rises toward the high ceiling portion and extends until its upper end is higher than the lower end of the hanging connecting surface portion of the high ceiling portion and overlaps with the hanging connecting surface portion of the high ceiling portion, and at least one of the overlapping portions of the hanging connecting surface portion of the high ceiling mounting member and the upright connecting surface portion of the low ceiling mounting member is provided with a loose hole that is long in the vertical direction, and the high ceiling mounting member and the low ceiling mounting member can be fixed by changing the vertical distance by using the loose hole.
Therefore, according to the present invention, even if the height of the high ceiling section and the low ceiling section that make up the ceiling of a building is changed, it is possible to respond without preparing a separate indirect lighting fixture, thereby making it possible to easily and quickly respond to on-site needs, improving workability and reducing costs.

1 is a diagram showing a state in which an indirect lighting fixture according to a first embodiment of the present invention is attached to a raised ceiling. 1 is a perspective view of an indirect lighting device according to a first embodiment of the present invention; FIG. 3 is a perspective view of the indirect lighting device of the first embodiment according to the present invention, seen from a different direction from that of FIG. 2 . 1 is a front view of a high ceiling mounting member for a cove that constitutes an indirect lighting fixture of a first embodiment of the present invention. FIG. 1 is a front view of a low ceiling mounting member for a cove that constitutes an indirect lighting fixture of a first embodiment of the present invention. FIG. 4A and 4B are diagrams illustrating a procedure for installing the indirect lighting fixture according to the first embodiment of the present invention. FIG. 11 is a diagram showing a state in which an indirect lighting fixture according to a second embodiment of the present invention is attached to a raised ceiling. FIG. 11 is a perspective view of an indirect lighting device according to a second embodiment of the present invention. FIG. 9 is a perspective view of an indirect lighting device according to a second embodiment of the present invention, seen from a different direction from that of FIG. 8 . FIG. 11 is a front view of a cornice-mounted high ceiling mounting member constituting an indirect lighting fixture of embodiment 2 according to the present invention. FIG. 11 is a front view of a retrofit high ceiling mounting member for a cornice that constitutes an indirect lighting fixture of embodiment 2 according to the present invention. 1 is a front view of a low ceiling mounting member for a cornice that constitutes an indirect lighting fixture of embodiment 1 according to the present invention. FIG. 6A and 6B are diagrams illustrating a procedure for installing an indirect lighting fixture according to a second embodiment of the present invention. 6A and 6B are diagrams illustrating a procedure for installing an indirect lighting fixture according to a second embodiment of the present invention. 8 is a diagram showing a state in which an indirect lighting fixture of a second embodiment of the present invention is attached to a raised ceiling, as viewed from a direction perpendicular to that of FIG. 7. FIG. This is a cross-sectional view showing the state in which an indirect lighting fixture of embodiment 2 of the present invention is installed on a raised ceiling, and shows the state in which a rear-mounted high ceiling mounting part for a cornice is installed offset from the front-mounted high ceiling mounting part for a cornice.

The following describes indirect lighting devices according to the first and second embodiments of the present invention with reference to the drawings. Note that the indirect lighting devices according to the first and second embodiments described below are merely examples of the present invention, including the values of length, etc., and the present invention is not limited to the embodiments described below, and can be modified as appropriate within the scope of the technical concept of the present invention.

Embodiment 1.
As shown in Figure 1 etc., the indirect lighting fixture 1 of embodiment 1 of the present invention is provided with so-called cove lighting in a raised ceiling 3 having a high ceiling section 31 and a low ceiling section 32 that is lower than the high ceiling section 31, which irradiates light from an LED lighting fixture 13 toward the high ceiling section 31.

<Configuration of the raised ceiling 3>
As shown in Figure 1 etc., the raised ceiling 3 is a ceiling having a high ceiling section 31 and a low ceiling section 32 which is lower than the high ceiling section 31, as described above, and is constructed of a so-called light ceiling framed with lightweight steel framework or the like. The high ceiling section 31 is constructed by supporting a joist support 31c for the high ceiling section 31 with hanging bolts 31a and hangers 31b for the high ceiling section 31, and supporting two ceiling gypsum boards (Pb) 31f, 31f via clips 31d and joists 31e provided on the joist support 31c.

Similarly, the low ceiling section 32 is configured by supporting the soffit support 32c for the low ceiling section 32 with the hanging bolt 32a and hanger 32b for the low ceiling section 32, and supporting two ceiling gypsum boards (Pb) 32f, 32f via clips 32d and soffits 32e provided on the soffit support 32c. In addition, in FIG. 1, 31g is a bolt holder that supports the hanging bolt 32a for the low ceiling section 32 provided on the soffit support 31c for the high ceiling section 31.

<Configuration of indirect lighting device 1 according to embodiment 1>
The indirect lighting fixture 1 of the first embodiment is a cove-type indirect lighting fixture to be installed on the raised ceiling 3 constructed as described above, and as shown in Figures 1 to 3, etc., is composed of a high ceiling mounting member for cove 11, a low ceiling mounting member for cove 12, an LED lighting device 13, misalignment prevention plates 14, 15, etc. Note that in Figures 2 and 3, the misalignment prevention plates 14, 15 are omitted, and a state is shown in which the high ceiling mounting members for cove 11, 11 and the low ceiling mounting members for cove 12, 12 are not connected to each other.

(High ceiling mounting member for cove 11)
As shown in Figure 4, the high ceiling mounting member 11 for the cove has a high ceiling fixing surface portion 11a which is fixed to the joist 31e for the high ceiling section 31 by means of tex screws 41 or the like, and a hanging connecting surface portion 11b which extends from the end of the high ceiling fixing surface portion 11a toward the low ceiling section 32 and is connected to the upper end of the low ceiling mounting member 12 for the cove.

The lower (back) surface of the high ceiling fixing surface portion 11a is formed with a screw position indication groove 11a1 that indicates the installation position of the tex screws 41 as shown in Figure 2, etc., and a misalignment prevention plate fitting portion 11a2 into which the upper end of the misalignment prevention plate 14 fits is provided near the hanging connecting surface portion 11b.

On the opposite side of the hanging connecting surface portion 11b to the high ceiling fixing surface portion 11a, there is a gypsum board end support protrusion 11b1 that protrudes from an upper end portion higher than the high ceiling fixing surface portion 11a in the opposite direction to the high ceiling fixing surface portion 11a and overlaps with the upper end surface of the upper ceiling gypsum board (Pb) 31f as shown in FIG. 1. On the other hand, on the high ceiling fixing surface portion 11a side of the hanging connecting surface portion 11b, there is a misalignment prevention plate fitting portion 11b2 into which the lower end of the misalignment prevention plate 14 fits so as to face the misalignment prevention plate fitting portion 11a2 of the high ceiling fixing surface portion 11a.

The hanging connecting surface 11b has a vertical length L1 of, for example, about 40 mm and a vertical adjustment margin of ±20 mm, so that the length can be adjusted vertically to connect to the connecting surface 11b1 of the cove low ceiling mounting member 12 described later. As shown in Figure 3, the hanging connecting surface 11b has a plurality of loose holes 11b3 arranged in the longitudinal direction of the cove low ceiling mounting member 12 with a hole pitch of, for example, about 500 mm, and is configured so that a pan head screw 42 or the like can be inserted.

(Low ceiling mounting member 12 for cove)
As shown in Figure 5 etc., the low ceiling mounting member 12 for a cove has an upright connecting surface portion 12a extending vertically and connecting to the hanging connecting surface portion 11b of the high ceiling mounting member 11 for a cove, a lamp mounting surface portion 12b extending horizontally from the lower end of the upright connecting surface portion 12a and fixed to clips 32d that constitute the low ceiling portion 32 as shown in Figure 1, and to which the LED lamp 13 is attached, a fascia board portion 12c that rises from the tip of the lamp mounting surface portion 12b and stands up so that the light of the LED lamp 13 is not irradiated toward the wall as much as possible, and a hanging surface portion 12d that hangs down from the tip of the lamp mounting surface portion 12b and is flush with the fascia board portion 12c.

The upper end of the upright connecting surface portion 12a is provided with a thickened screw receiving portion 12a1, and multiple female screw holes 12a2 (see Figure 2) into which pan screws 42, etc. inserted into the loose holes 11b3 of the hanging connecting surface portion 11b of the cove high ceiling mounting member 11 are screwed are provided in the longitudinal direction of the cove low ceiling mounting member 12 with a hole pitch of, for example, about 500 mm, similar to the loose holes 11b3.

As shown in FIG. 1, the lamp mounting surface 12b has a screw position indication groove 12b1 that indicates the installation position of the tex screws 41 that are fixed to the clips 32d that make up the low ceiling 32, and a misalignment prevention plate fitting portion 12b2 into which the upper end of the misalignment prevention plate 15 fits is provided near the connection between the apron 12c and the hanging surface 12d.

In addition, the lamp mounting surface 12b is provided with circular heat escape/wiring holes 12b3 at appropriate intervals to allow wiring to the LED lamps 13 provided on the lamp mounting surface 12b and to release heat, as shown in Figure 2. Note that, as shown in Figure 2, the heat escape/wiring holes 12b3 are also provided at multiple holes at intervals of, for example, about 500 mm in the longitudinal direction of the cove low ceiling mounting member 12, similar to the loose holes 11b3 and female screw holes 12a2.

The fascia portion 12c faces the upright connecting surface portion 12a at the tip of the lamp mounting surface portion 12b, and is configured to rise to approximately the same height as the upright connecting surface portion 12a.

The hanging surface 12d is configured to hang down from the tip of the lamp installation surface 12b, and at the middle part on the lamp installation surface 12b side, there is a misalignment prevention plate fitting part 12d1 into which the lower end of the misalignment prevention plate 15 fits so as to face the misalignment prevention plate fitting part 12b2 of the lamp installation surface 12b, and at the lower end, there is a gypsum board end support protrusion 12d2 that protrudes slightly toward the lamp installation surface 12b and overlaps with the tip of the lower ceiling gypsum board (Pb) 32f that constitutes the low ceiling part 32 as shown in Figure 1.

(LED lighting fixture 13)
The LED lighting fixture 13 is, for example, an LED tube light having multiple LEDs built in a long, flexible silicone tube, and is fixed to the upper surface of the lighting fixture installation surface portion 12b with double-sided tape, adhesive, etc. The LED lighting fixture 13 is not limited to an LED tube light, and an LED fluorescent tube, etc. may of course be used.

(Misalignment prevention plates 14, 15)
The misalignment prevention plates 14, 15 are members that connect the high ceiling mounting members 11, 11 for coves together or the low ceiling mounting members 12, 12 for coves together, respectively. The longitudinal length of one high ceiling mounting member 11 and low ceiling mounting member 12 for coves is, for example, about 1.5 m to 3 m, which is convenient for work and transportation, and if a longer length is required, a misalignment prevention plate 14 or misalignment prevention plate 15, which is a joint material, is fitted between the misalignment prevention plate fitting parts 11a2, 11b2 of the high ceiling mounting member 11 for cove, or between the misalignment prevention plate fitting parts 12b2, 12d1 of the low ceiling mounting member 12 for cove, as shown in Figure 1, etc., to join the high ceiling mounting members 11, 11 or the low ceiling mounting members 12, 12 for cove to lengthen them and prevent misalignment at the connecting parts of the high ceiling mounting members 11, 11 or the low ceiling mounting members 12, 12 for cove.

<Method of mounting the indirect lighting device 1 according to the first embodiment>
Next, a method of mounting the indirect lighting device 1 of the first embodiment configured as above will be briefly described with reference to the drawings.

First, as shown in FIG. 6(a), the siding 31e is attached to the siding support 31c of the high ceiling section 31 that constitutes the raised ceiling 3 via a clip 31d. The tex screws 41 are then passed through the screw position indication grooves 11a1 of the high ceiling fixing surface section 11a of the high ceiling mounting member 11 for the cove, and then rotated to fix the high ceiling mounting member 11 for the cove to the siding 31e.

Next, install the low ceiling mounting member 12 for the cove below the high ceiling mounting member 11 for the cove, and as shown in FIG. 6(b), insert the pan head screw 42 through the loose hole 11b3 of the hanging connecting surface portion 11b of the low ceiling mounting member 12 for the cove and screw it into the female screw hole 12a2 (see FIG. 5, etc.).

The loose hole 11b3 of the hanging connection surface portion 11b has a vertical length L1 of, for example, about 40 mm and an adjustment margin of ±20 mm in the vertical direction, so that even if the distance between the high ceiling portion 31 and the low ceiling portion 32 changes by about ±20 mm, the change can be absorbed by the loose hole 11b3 and the indirect lighting device 1 can be attached.

Then, as shown in FIG. 1, two ceiling gypsum boards (Pb) 31f, 31f are fixed to the rafters 31e of the high ceiling section 31, and two ceiling gypsum boards (Pb) 32f, 32f are fixed to the rafters 32e of the low ceiling section 32.

The LED lighting fixture 13 may be attached in advance to the upper surface of the lighting fixture installation surface portion 12b of the cove low ceiling mounting member 12, or the LED lighting fixture 13 may be attached after the cove low ceiling mounting member 12 is attached to the folded ceiling 3.

<Summary of the indirect lighting device 1 according to the first embodiment>
As described above, the indirect lighting fixture 1 of embodiment 1 according to the present invention is divided into a high ceiling mounting member for a cove 11 which is fixed to the high ceiling portion 31, and a low ceiling mounting member for a cove 12 which is fixed to the low ceiling portion 32 and has a lamp 13 mounted thereon, and the hanging connecting surface portion 11b of the high ceiling mounting member for a cove 11 is provided with a loose hole 11b3 having a vertical length L1 of, for example, about 40 mm and an adjustment margin of ±20 mm. Therefore, even if the distance between the high ceiling portion 31 and the low ceiling portion 32 changes by about ±20 mm, the change can be absorbed by the loose hole 11b3 and the indirect lighting fixture 1 can be attached.

As a result, even in the case of a folded ceiling 3 with a different spacing between the high ceiling section 31 and the low ceiling section 32, the indirect lighting fixture 1 of embodiment 1 can be used, eliminating the need to prepare a separate indirect lighting fixture with a different vertical spacing between the cove high ceiling mounting member 11 and the cove low ceiling mounting member 12. This makes it possible to easily and quickly respond to on-site needs, improve workability, and reduce costs.

Embodiment 2.
Next, an indirect lighting fixture 2 according to a second embodiment of the present invention will be described. As shown in Fig. 7 and other figures, the indirect lighting fixture 2 according to the second embodiment constitutes a so-called cornice-type indirect lighting that irradiates light from an LED lighting device 13 on a raised ceiling 3 toward a wall surface 5 inside a room.

The structure of the raised ceiling 3 to which the indirect lighting fixture 2 of the second embodiment is attached is the same as that of the raised ceiling 3 described in the indirect lighting fixture 1 of the first embodiment in that it has a high ceiling portion 31 and a low ceiling portion 32 that is lower than the high ceiling portion 31 as shown in FIG. 7, but the raised ceiling 3 is constructed in a location close to the wall surface 5 in the room to configure a cornice-type indirect lighting. In FIG. 7, 51 denotes two pieces of wall gypsum board (Pb).

<Configuration of indirect lighting device 2 according to embodiment 2>
The indirect lighting fixture 2 of the second embodiment is a cornice-type indirect lighting fixture to be installed on a raised ceiling 3 constructed close to a wall surface 5 as shown in Fig. 7, and is composed of a cornice pre-attached high ceiling mounting member 21 and a cornice post-attached high ceiling mounting member 22, a cornice low ceiling mounting member 23, an LED lighting fixture 13, and misalignment prevention plates 24, 25, 26, etc., which constitute the cornice high ceiling mounting member as shown in Fig. 7 to Fig. 9. Note that the misalignment prevention plates 24, 25, 26 are omitted in Fig. 8 and Fig. 9, and a state is shown in which the cornice pre-attached high ceiling mounting members 21, 21 are not connected to each other, the cornice post-attached high ceiling mounting members 22, 22 are not connected to each other, and the cornice low ceiling mounting members 23, 23 are not connected to each other.

(Pre-attached high ceiling mounting member for cornice 21)
The pre-attached high ceiling mounting member for cornice 21, together with the post-attached high ceiling mounting member for cornice 22, constitutes a high ceiling mounting member for cornice, but is fixed to the rough joist 31e for the high ceiling section 31 with tex screws 41 before the post-attached high ceiling mounting member for cornice 22, and is a member that is attached so that its tip portion 21a abuts against the surface of the wall gypsum board (Pb) 51 of the wall surface 5 inside the room.As shown in Figure 10, the underside has a first L-shaped hooked portion 21b and a second hooked portion 21c spaced a predetermined distance apart, while the upper side has misalignment prevention plate fitting portions 21d, 21e into which a misalignment prevention plate 24 fits to connect the pre-attached high ceiling mounting members for cornice 21, 21 to each other to make them longer.

The first and second hung portions 21b and 21c are each configured in an L-shape from a first and second hanging portion 21b1 and 21c1 that hang down from the underside of the cornice-mounted high ceiling mounting member 21, and a first and second hanging horizontal portion 21b2 and 21c2 that extend from the lower ends of the first and second hanging portions 21b1 and 21c1 toward the center of the room.

The horizontal length L2 of the first horizontal hook portion 21b2 and the second horizontal hook portion 21c2 is, for example, approximately 8 mm to 10 mm.

In addition, on the rear side of each of the first and second hooked portions 21b and 21c, as shown in FIG. 7, a screw head concealing recess 21f, 21g is provided that passes through a tex screw 41 that fixes the cornice pre-attached high ceiling mounting member 21 to the joist 31e for the high ceiling portion 31 and protrudes upward to prevent the head of the tex screw 41 from protruding, and the screw head concealing recess 21f, 21g is provided with a screw position indicating recess 21f1, 21g1 that indicates the screw-in position of the tex screw 41.

The rear end of the cornice pre-attached high ceiling mounting member 21 is provided with a thickened screw receiving section 21h for connecting with the cornice post-attached high ceiling mounting member 22 using a tex screw 41, and the screw receiving section 21h is provided with a screw position indication groove 21h1 that indicates the screw-in position of the tex screw 41.

(Retrofit high ceiling mounting member for cornice 22)
The retrofit high ceiling mounting member for cornice 22 is a member that is attached later to the pre-fitted high ceiling mounting member for cornice 21 fixed to the high ceiling portion 31, although it constitutes a high ceiling mounting member for cornice together with the pre-fitted high ceiling mounting member for cornice 21.As shown in Figure 11, it has an inverted L-shaped first hanging portion 22b and a second hanging portion 22c that hang on the L-shaped first hanging portion 21b and second hanging portion 21c of the pre-fitted high ceiling mounting member for cornice 21, respectively, and between the first hanging portion 22b and the second hanging portion 22c, there are provided misalignment prevention plate fitting portions 22d, 22e into which a misalignment prevention plate 24 fits to connect the retrofit high ceiling mounting members for cornice 22, 22 to each other to increase the length.

The first hanging portion 22b and the second hanging portion 22c are respectively configured in an inverted L shape with a first hanging upright portion 22b1 and a second hanging upright portion 22c1 that stand up from the upper surface of the cornice rear high ceiling mounting member 22, and a first hanging horizontal portion 22b2 and a second hanging horizontal portion 22c2 that extend from the upper ends of the first hanging upright portion 22b1 and the second hanging upright portion 22c1 toward the wall surface 5 of the room.

The horizontal length L3 of the first horizontal hook portion 22b2 and the second horizontal hook portion 22c2 is, for example, approximately 8 mm to 10 mm.

The rear end of the cornice high ceiling mounting member 22 has a rising surface 22f that rises higher than the first hook portion 22b and the second hook portion 22c, a fixing protrusion 22g that protrudes from the upper end of the rising surface 22f toward the center of the room at the rear and overlaps with the screw receiving thickening portion 21h at the rear end of the cornice high ceiling mounting member 21 and is fixed by a tex screw 41, and a hanging connecting surface 22h that hangs down on the opposite side to the rising surface 22f and is connected to the cornice low ceiling mounting member 23.

The fixing protrusion 22g is formed with a screw position indication groove 22g1 that indicates the screw-in position of the tex screw 41. The horizontal length L4 of the fixing protrusion 22g is, for example, about 20 mm to 25 mm, and the length L5 from the rear end to the screw position indication groove 22g1 is about 7 mm to 8 mm.

As shown in FIG. 9, the hanging connecting surface 22h is provided with a loose hole 22h1 having a vertical length L6 of, for example, about 40 mm with an adjustment margin of ±20 mm for connecting to the rising connecting surface 23a of the cornice low ceiling mounting member 23 described later, and is configured so that a pan head screw 42 can be inserted into the loose hole 22h1.

(Low ceiling mounting member for cornice 23)
As shown in Figure 12, the low ceiling mounting member 23 for a cornice has an upright connecting surface portion 23a extending vertically which connects to the hanging connecting surface portion 22h of the retrofit high ceiling mounting member 22 for a cornice, a lighting fixture installation surface portion 23b which extends horizontally from the lower end of the upright connecting surface portion 23a and is fixed to a clip 32d which constitutes the low ceiling portion 32, and to which the LED lighting fixture 13 is attached, and a low ceiling end concealing surface portion 23c which hangs down from the tip of the lighting fixture installation surface portion 23b and extends to the ceiling gypsum board (Pb) 32f below the low ceiling portion 32.

The upper end of the upright connecting surface 23a is provided with a thickened screw receiving section 23a1, which is formed with a female screw hole 23a2 into which a pan head screw 42 or the like inserted into a loose hole 22h1 in the hanging connecting surface 22h of the cornice retrofit high ceiling mounting member 22 is screwed.

In addition, below the thickened screw receiving portion 23a1 of the upright connecting surface portion 23a, circular heat escape/wiring holes 23a3 (see Figure 8) are provided at appropriate intervals to allow wiring to the LED lighting fixture 13 provided on the lighting fixture installation surface portion 12b and to allow heat to escape.

At the rear end of the lamp mounting surface 23b, as shown in FIG. 7, a screw position indication groove 23b1 is formed to indicate the installation position of the tex screws 41 that are fixed to the clips 32d that make up the low ceiling 32, and at the tip end close to the low ceiling end concealing surface 23c, there is a misalignment prevention plate fitting portion 23b2 into which the upper end of the misalignment prevention plate 15 fits.

In addition, the middle part of the low ceiling end concealing surface part 23c is provided with a misalignment prevention plate fitting part 23c1 into which the lower end of the misalignment prevention plate 15 fits so as to face the misalignment prevention plate fitting part 23b2 of the lamp installation surface part 23b, and the lower end is provided with a plaster board end support protrusion 23c2 that protrudes slightly toward the center of the room and overlaps with the tip of the ceiling plaster board (Pb) 32f that constitutes the low ceiling part 32 as shown in Figure 7.

<Method of mounting the indirect lighting device 2 according to the second embodiment>
Next, a method of mounting the indirect lighting device 2 according to the second embodiment configured as above will be briefly described with reference to the drawings.

First, as shown in FIG. 13(a), the cornice pre-attached high ceiling mounting member 21 is attached to the two sills 31e provided via clips 31d on the sill support 31c of the high ceiling section 31 that constitutes the folded ceiling 3. The cornice pre-attached high ceiling mounting member 21 is attached by passing a tex screw 41 through the screw head concealment recesses 21f, 21g of the cornice pre-attached high ceiling mounting member 21, and then rotating it to fix the cornice pre-attached high ceiling mounting member 21 to the sill 31e.

Next, as shown in FIG. 13(b), the first hook portion 22b and the second hook portion 22c on the upper surface side of the rear-mounted high ceiling mounting member for the cornice 22 are shifted and lifted from below the front-mounted high ceiling mounting member for the cornice 21 so that they do not come into contact with the first hooked portion 21b and the second hooked portion 21c of the front-mounted high ceiling mounting member for the cornice 21, and then the rear-mounted high ceiling mounting member for the cornice 22 is slid toward the indoor wall surface 5, and the cornice is attached to the rear-mounted high ceiling mounting member for the cornice 22 as shown in FIG. 14(a). The first hooking portion 22b and the second hooking portion 22c on the upper surface of the rear-mounted high ceiling mounting member 22 for the cornice are hooked to the first hooked portion 21b and the second hooked portion 21c of the front-mounted high ceiling mounting member 21 for the cornice, and the tex screw 41 is screwed into the fixing protrusion 22g at the rear end of the rear-mounted high ceiling mounting member 22 for the cornice by referring to the screw position indication groove 22g1, and fixed to the thickened screw receiving portion 21h at the rear end of the front-mounted high ceiling mounting member 21 for the cornice.

Here, the tex screws 41 are fixed in the screw head concealing recesses 21f, 21g of the pre-attached high ceiling mounting member for cornice 21, so the heads of the tex screws 41 do not protrude from the screw head concealing recesses 21f, 21g and do not interfere with the first hook portion 22b and the second hook portion 22c on the upper surface side of the post-attached high ceiling mounting member for cornice 22, allowing the work of hooking the post-attached high ceiling mounting member for cornice 22 to the pre-attached high ceiling mounting member for cornice 21 to be performed smoothly.

In addition, as shown in FIG. 14(a), there is sufficient space between the lower end of the hanging connecting surface portion 22h of the rear-mounted high ceiling mounting member for cornice 22 and the sill support 32c of the low ceiling portion 32, so when fixing the rear-mounted high ceiling mounting member for cornice 22 to the front-mounted high ceiling mounting member for cornice 21 with a tex screw 41, it is possible to insert tools and a tex screw 41 from below the hanging connecting surface portion 22h and perform the work, improving the workability of the screw fixing.

In addition, not only the tex screws 41 that secure the cornice pre-attached high ceiling mounting member 21 to the two joists 31e of the high ceiling section 31, but also the tex screws 41 that secure the fixing protrusion 22g of the cornice post-attached high ceiling mounting member 22 and the screw-receiving thickened portion 21h of the cornice pre-attached high ceiling mounting member 21 are invisible from below the folded-up ceiling 3, improving the workability of screw fixing while also improving the aesthetic appearance.

After fixing the rear-mounted high ceiling mounting member 22 for the cornice to the front-mounted high ceiling mounting member 21 for the cornice as shown in FIG. 14(a), insert a pan head screw 42 or the like into the loose hole 22h1 of the hanging connecting surface portion 22h of the rear-mounted high ceiling mounting member 22 for the cornice as shown in FIG. 14(b), and screw it into the female screw hole 23a2 of the standing connecting surface portion 23a of the low ceiling mounting member 23 for the cornice to connect them. Note that when the rear-mounted high ceiling mounting member 22 for the cornice is fixed to the front-mounted high ceiling mounting member 21 for the cornice, in this embodiment, a gap (gap) C of, for example, about 5 mm to 10 mm is formed between the wall surface 5 inside the room and the tip portion 22a of the rear-mounted high ceiling mounting member 22 for the cornice as shown in FIG. 7.

The loose hole 22h1 of the retrofit high ceiling mounting member 22 for cornice is a long hole with an adjustment margin of ±20 mm, with the vertical length L1 of the hanging connecting surface portion 22h being, for example, about 40 mm, so that, as with the case of the cove-type indirect lighting fixture 1 of embodiment 1, even if the distance between the high ceiling portion 31 and the low ceiling portion 32 changes by about ±20 mm, the change can be absorbed by the loose hole 22h1 and the indirect lighting fixture 1 can be attached.

The LED lighting fixture 13 may be attached in advance to the upper surface of the lighting fixture installation surface 23b of the cornice low ceiling mounting member 23, or the LED lighting fixture 13 may be attached after the cornice low ceiling mounting member 23 is attached to the raised ceiling 3.

Also, unlike Figures 13 and 14, which show the soffit support 32c from the side direction, when viewed from the front and rear ends of the soffit support 32c, if the soffit support 32c etc. is not provided below the cornice low ceiling mounting member 23 and a gap is created between the soffit 32e, for example, as shown in Figure 15, a spacer 32g such as a piece of wood can be inserted between the cornice low ceiling mounting member 23 and the soffit 32e, and a tex screw 41 can be screwed into the screw position indication groove 23b1 of the cornice low ceiling mounting member 23 to fix it to the spacer 32g.

In addition, in the low ceiling portion 32, if the longitudinal length of the joists 32e of the ceiling gypsum boards (Pb) 32f, 32f is short, and the distance between the tip 22a of the cornice rear-mounted high ceiling mounting member 22 and the wall surface gypsum board (Pb) 51 of the wall surface 5 is about 5 mm as shown in FIG. 7, the tip of the ceiling gypsum boards (Pb) 32f, 32f cannot be supported by the gypsum board end support protrusion 23c2 of the cornice low ceiling mounting member 23. In this case, the cornice rear-mounted high ceiling mounting member 22 may be attached to the cornice front-mounted high ceiling mounting member 21 toward the center of the room, as shown in FIG. 7, to configure the indirect lighting fixture 2 of embodiment 2, for example, as shown in FIG. 16.

Figure 16 shows the case where the distance between the tip 22a of the cornice retrofit high ceiling mounting member 22 and the wall surface gypsum board (Pb) 51 of the wall surface 5 is widened from 5 mm to about twice that, 10 mm.

As shown in FIG. 16, when the rear-mounted high ceiling mounting member for cornice 22 is attached to the front-mounted high ceiling mounting member for cornice 21 by shifting it toward the center of the room, the tips of the first hanging horizontal portion 21b2 and the second hanging horizontal portion 21c2 of the first hanging portion 21b and the second hanging portion 21c of the front-mounted high ceiling mounting member for cornice 21 do not abut against the side of the first hanging upright portion 22b1 and the second hanging upright portion 22c1 of the first hanging portion 22b and the second hanging portion 22c of the rear-mounted high ceiling mounting member for cornice 22, and the tips of the first hanging horizontal portion 22b2 and the second hanging horizontal portion 22c2 of the first hanging portion 22b and the second hanging portion 22c of the rear-mounted high ceiling mounting member for cornice do not abut against the side of the first hanging portion 21b and The first hanging hanging portion 21b1 and the second hanging hanging portion 21c1 of the first hanging portion 21b and the second hanging portion 21c will no longer abut against the side surface, but the first hanging horizontal portion 21b2 and the second hanging horizontal portion 21c2 of the first hanging portion 21b and the second hanging portion 21c, respectively, and the first hanging horizontal portion 22b2 and the second hanging horizontal portion 22c2 of the first hanging portion 22b and the second hanging portion 22c of the cornice rear-mounted high ceiling mounting member 22 overlap and engage at their tips, and the fixing protrusion 22g of the cornice rear-mounted high ceiling mounting member 22 and the screw receiving thickened portion 21h of the cornice front-mounted high ceiling mounting member 21 are fixed with tex screws 41, so there is no problem with the fixing of the cornice front-mounted high ceiling mounting member 21 and the cornice rear-mounted high ceiling mounting member 22.

In addition, the horizontal length L4 (see Figure 11) of the fixing protrusion 22g of the cornice rear-mounted high ceiling mounting member 22 is, for example, about 20 mm to 25 mm, and the length L5 from the rear end of the fixing protrusion 22g to the screw position indication groove 22g1 is about 7 mm to 8 mm. Therefore, even if the cornice rear-mounted high ceiling mounting member 22 is moved back about 5 mm from the cornice front-mounted high ceiling mounting member 21 toward the center of the room wall surface 5 from the connected state shown in Figure 7, the fixing protrusion 22g and the screw receiving thickened portion 21h can be fixed with the tex screws 41, although the tex screws 41 will be misaligned about 5 mm from the screw position indication groove 22g1.

In this case, the low ceiling mounting member 23 for the cornice, which is fixed to the rear high ceiling mounting member 22 for the cornice, will also be set back about 5 mm toward the center of the room from the connected state shown in FIG. 7, so the tex screw 41 passed through the screw position indication groove 23b1 at the rear end of the lamp installation surface portion 23b will be fixed in a position shifted toward the center of the room from the center of the clip 32d for the low ceiling portion 32, as shown in FIG. 16.

<Summary of indirect lighting device 2 according to embodiment 2>
As described above, the indirect lighting fixture 2 of embodiment 2 according to the present invention is a cornice-type indirect lighting fixture in which the high ceiling mounting member is divided into a front-mounted high ceiling mounting member 21 for a cornice and a rear-mounted high ceiling mounting member 22 for a cornice, and the hanging connecting surface portion 22h of the rear-mounted high ceiling mounting member 22 for a cornice is provided with a long loose hole 22h1 having a vertical length L1 of, for example, about 40 mm and an adjustment margin of ±20 mm.

Therefore, even if the distance between the high ceiling section 31 and the low ceiling section 32 changes by about ±20 mm, the change can be absorbed by the loose hole 22h1 and the indirect lighting fixture 2 can be attached, eliminating the need to prepare a separate indirect lighting fixture 1 with a different vertical distance between the retrofit high ceiling mounting member 22 for the cornice and the low ceiling mounting member 23 for the cornice. This makes it possible to easily and quickly respond to on-site needs, improve workability, and reduce costs.

In the indirect lighting fixture 2 according to the second embodiment of the present invention, the high ceiling mounting member is fixed to the high ceiling portion 31 by a fixing member such as a screw or bolt, and is divided into two parts: a pre-attached high ceiling mounting member 21 for a cornice, which has a first L-shaped hook portion 21b and a second L-shaped hook portion 21c spaced a predetermined distance apart on the underside, and a post-attached high ceiling mounting member 22 for a cornice, which has an inverted L-shaped first hook portion 22b and a second L-shaped hook portion 22c on the upper side that slide from the side and hook onto the first hook portion 21b and the second hook portion 21c.

Therefore, the pre-attached high ceiling mounting member 21 for the cornice is first attached to the high ceiling portion 31, and then the first hook portion 22b and the second hook portion 22c of the post-attached high ceiling mounting member 22 for the cornice are hooked to the first hook portion 21b and the second hook portion 21c of the pre-attached high ceiling mounting member 21 for the cornice, respectively, for temporary attachment, and then the post-attached high ceiling mounting member 22 for the cornice can be fixed to the pre-attached high ceiling mounting member 21 for the cornice with the tex screws 41, making it easier to attach the post-attached high ceiling mounting member 22 for the cornice to the pre-attached high ceiling mounting member 21 for the cornice, improving workability.

In particular, as shown in FIG. 7, the cornice post-attached high ceiling mounting member 22 is brought as close as possible to the wall surface 5 side of the room relative to the cornice pre-attached high ceiling mounting member 21, and the ends of the first hanging horizontal portion 21b2 and the second hanging horizontal portion 21c2 of the first hanging portion 21b and the second hanging portion 21c of the cornice pre-attached high ceiling mounting member 21 are brought into contact with or close to the side surfaces of the first hanging upright portion 22b1 and the second hanging upright portion 22c1 of the first hanging portion 22b and the second hanging portion 22c of the cornice post-attached high ceiling mounting member 22, or the ends of the first hanging horizontal portion 22b2 and the second hanging horizontal portion 22c2 of the first hanging portion 22b and the second hanging portion 22c of the cornice post-attached high ceiling mounting member 22 are brought into contact with or close to the side surfaces of the first hanging portion 21b and When the first hanging portion 21b1 and the second hanging portion 21c are hung so as to abut or be close to the side of the first hanging portion 21b1 and the second hanging portion 21c1, respectively, in the low ceiling portion 32, if the longitudinal length of the joists 32e of the ceiling gypsum boards (Pb) 32f, 32f is short and the gypsum board end support protrusion 23c2 cannot support the ends of the ceiling gypsum boards (Pb) 32f, 32f and a gap is likely to be created between them, the cornice post-attachment high ceiling mounting member 22 can be attached by shifting it toward the center of the room relative to the cornice pre-attachment high ceiling mounting member 21 as shown in FIG. 16, so that it is possible to easily and quickly respond to on-site needs, improve workability, and reduce costs.

In addition, in the indirect lighting fixture 2 of the second embodiment, when the first hooked portion 21b and the second hooked portion 21c of the cornice pre-attached high ceiling mounting member 21 are hooked to the first hooked portion 22b and the second hooked portion 22c of the cornice post-attached high ceiling mounting member 22, the tip portion 21a of the cornice pre-attached high ceiling mounting member 21 is configured to protrude toward the wall surface 5 inside the room more than the tip portion 22a of the cornice post-attached high ceiling mounting member 22. Therefore, when the tip portion 21a of the cornice pre-attached high ceiling mounting member 21 is attached to the high ceiling portion 31 so as to abut or be close to the wall gypsum board (Pb) 51 of the wall surface 5 inside the room as shown in Figures 7 and 16, a gap (gap) C of about 5 mm to 10 mm is provided between the tip portion 22a of the cornice post-attached high ceiling mounting member 22 and the wall surface 5 inside the room.

However, a slit-shaped shadow is formed by the light from the LED light 13 in the gap C between the tip 22a of the cornice post-attachment high ceiling mounting member 22 and the wall gypsum board (Pb) 51 on the wall surface 5 inside the room. Even if the cornice post-attachment high ceiling mounting member 22 is attached offset toward the center of the room relative to the cornice pre-attachment high ceiling mounting member 21 as shown in FIG. 16 and the gap C widens to about 10 mm, the slit-shaped shadow makes the gap C difficult to notice for people below. This not only makes it easy to meet on-site needs and improves workability, but also improves the finish of the folded ceiling 3.

In addition, the gap (gap) C between the tip 22a of the cornice post-attached high ceiling mounting member 22 and the wall surface 5 inside the room is narrow as shown in Figures 7 and 16, and a slit-shaped (linear) shadow is formed by the LED light emitted from the LED lighting device 13 installed diagonally below the gap (gap) C toward the center of the room. Therefore, even if a gap is formed between the tip 21a of the cornice pre-attached high ceiling mounting member 21 and the wall surface gypsum board (Pb) 51 due to bending of the wall surface 5, the slit-shaped (linear) shadow formed between the tip 22a of the cornice pre-attached high ceiling mounting member 22 and the wall surface gypsum board (Pb) 51 makes it difficult for people below to see, improving the design.

In the indirect lighting fixture 2 of the second embodiment, the cornice pre-attached high ceiling mounting member 21 is provided with the L-shaped first and second hooked portions 21b and 21c, while the cornice post-attached high ceiling mounting member 22 is provided with the inverted L-shaped first and second hooked portions 22b and 22c that hook onto the L-shaped first and second hooked portions 21b and 21c of the cornice pre-attached high ceiling mounting member 21, respectively. However, the present invention is not limited to this, and may be of a fitting, locking, engagement, or even uneven relationship, and is not particularly limited to a shape (relationship) that allows the cornice post-attached high ceiling mounting member 22 to be temporarily hooked or temporarily fastened to the cornice pre-attached high ceiling mounting member 21.

1 Indirect lighting device (embodiment 1)
LIST OF SYMBOLS 11 High ceiling mounting member for cove 11a High ceiling fixing surface 11a1 Screw position indication groove 11a2 Misalignment prevention plate fitting portion 11b Drop-down connecting surface 11b1 Protruding portion for supporting plasterboard end 11b2 Misalignment prevention plate fitting portion 11b3 Loose hole 12 Low ceiling mounting member for cove 12a Upright connecting surface 12a1 Thickened portion for receiving screws 12a2 Female screw hole 12b Lighting device installation surface 12b1 Screw position indication groove 12b2 Misalignment prevention plate fitting portion 12c Skirt panel portion 12d Drop-down surface 12d1 Misalignment prevention plate fitting portion 12d2 Protruding portion for supporting plasterboard end 13 LED lighting device 14, 15 Misalignment prevention plate 2 Indirect lighting device 21 Pre-attached high ceiling mounting member for cornice 21a Tip portion 21b First hooked portion 21b1 First hooked hanging portion 21b2 First hooked horizontal portion 21c Second hooked portion 21c1 Second hooked hanging portion 21c2 Second hooked horizontal portion 21d, 21e Misalignment prevention plate fitting portion 21f, 21g Screw head concave portion 21h Thickened portion for receiving screw 21h1 Screw position indication concave groove 22 Post-attached high ceiling mounting member for cornice 22a Tip portion 22b First hooked portion 22b1 First hooked upright portion 22b2 First hooked horizontal portion 22c Second hooked portion 22c1 Second hooked upright portion 22c2 Second hooked horizontal portion 22d, 22e Misalignment prevention plate fitting portion 22f Standing surface portion 22g Fixing protrusion 22g1 Screw position indication groove 22h Dropping connecting surface portion 22h1 Loose hole 23 Low ceiling mounting member for cornice 23a Standing connecting surface portion 23a1 Thickened portion for receiving screws 23a2 Female screw hole 23a3 Heat escape and wiring hole 23b Lighting fixture installation surface portion 23b1 Screw position indication groove 23b2 Misalignment prevention plate fitting portion 23c Low ceiling end concealing surface portion 23c1 Misalignment prevention plate fitting portion 23c2 Protrusion for supporting plasterboard end 24, 25, 26 Misalignment prevention plate 3 Folded ceiling 31 High ceiling portion 32 Low ceiling portion 31a Suspension bolt 31b Hanger 31c Rafter support 31d Clip 31e Rafter 31f Ceiling gypsum board (Pb)
31g Bolt holder 32 Low ceiling section 32a Hanging bolt 32b Hanger 32c Rafter support 32d Clip 32e Rafter 32f Ceiling gypsum board (Pb)
32g Spacer 41 Tesvis 42 Pan screws 5 Indoor wall 51 Wall gypsum board (Pb)

Claims (3)

An indirect lighting fixture to be installed on a ceiling of a building having a high ceiling portion and a low ceiling portion disposed at a lower position than the high ceiling portion,
A high ceiling mounting member is attached to the high ceiling portion and has a hanging connecting surface portion that descends toward the low ceiling portion;
a low ceiling mounting member having a lamp mounting surface portion attached to the low ceiling portion and on which a lamp is mounted, and an upright connecting surface portion that rises toward the high ceiling portion and extends until its upper end portion is higher than the lower end portion of the hanging connecting surface portion of the high ceiling mounting member, and that overlaps with the hanging connecting surface portion of the high ceiling mounting member;
An indirect lighting fixture characterized in that at least one of the overlapping portions of the hanging connecting surface portion of the high ceiling mounting member and the upright connecting surface portion of the low ceiling mounting member has a loose hole that is long in the vertical direction, and that the high ceiling mounting member and the low ceiling mounting member can be fixed by changing the vertical distance between them using the loose hole. 2. The indirect lighting device according to claim 1,
The high ceiling mounting member is
A pre-attached high ceiling mounting member that is fixed to the high ceiling portion by a fixing member and has a hook portion on a lower surface side thereof;
a rear-mounted high ceiling mounting member having a hanging portion that is hooked to the hooked portion and the hanging connection surface portion;
The hooked portion of the first-attached high ceiling mounting member is provided on the lower surface side of the first-attached high ceiling mounting member at a predetermined interval.
The indirect lighting fixture is characterized in that the hanging portion of the rear-mounted high ceiling mounting member is provided on the upper surface side of the rear-mounted high ceiling mounting member with a predetermined distance therebetween relative to the front-mounted high ceiling mounting member, and is configured to be hung on the hanging portion of the front-mounted high ceiling mounting member. 3. The indirect lighting device according to claim 2,
When the hooking portion of the rear-mounted high ceiling mounting member is hooked onto the hooked portion of the front-mounted high ceiling mounting member, the tip of the front-mounted high ceiling mounting member protrudes toward the wall surface inside the room further than the tip of the rear-mounted high ceiling mounting member, and when the tip of the front-mounted high ceiling mounting member is attached to the high ceiling portion so that it abuts or is close to the wall surface inside the room, a gap is created between the tip of the rear-mounted high ceiling mounting member and the wall surface inside the room.

Images